/Engine/Source/Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h
Revert to previous position OldLocation, return to being based on OldBase. if bFailMove, stop movement and notify controller
void RevertMove ( const FVector & OldLocation, [UPrimitiveComponent](API\Runtime\Engine\Components\UPrimitiveComponent) * OldBase, const FVector & InOldBaseLocation, const [FFindFloorResult](API\Runtime\Engine\FFindFloorResult) & OldFloor, bool bFailMove )